生态环境学报Issue(7)：1148-1152,5.
蒙古沙冬青AM真菌物种多样性研究
Species diversity of arbuscular mycorrhizal fungi in the rhizosphere of Ammopiptanthus monglicus
摘要
Abstract
Arbuscular mycorrhizal fungi (AM) are important functional components of ecosystems. In order to elucidate the diversity and distribution of AM fungi in the rhizosphere of Ammopiptanthus monglicus, soil samples in the rhizosphere of A. monglicus were collected from three samples sites (Yin Chuan, Sha Potou and Min Qin) and divided into five layers on the basis of depth, from top to bottom: 0-10, 10-20, 20-30, 30-40, 40-50 cm in July 2012. In this study, 36 species of AM fungi were isolated from four genera isolated in three sampling sites. Among these species, nineteen of them belonged to Glomus, thirteen of them to Acaulospora, three of them to Scutellospora and one of them to Diversispora. AM fungal species diversity was closely related to the soil environments. G.melanosporum was the dominant species in Yinchuan and Shapotou, G.reticulatum was the dominate species in Min Qin. AM fungal spore density, species richness and species diversity were the highest in Min Qin site, and the value was maximum in the 0-20 cm soil layer and decreased with soil depth. The contents of total extractable glomalin (TEG) and easily extractable glomalin (EEG) also decreased with layers deepened. The correlation analysis showed that spore density had a significant positive correlation with soil organic matter, available N, available P, and TEG. The results showed that the AM fungal species diversity has obvious spatial distribution of heterogeneity and closely related with soil environments.关键词
AM真菌/物种多样性/土壤因子/蒙古沙冬青(Ammopiptanthus monglicus)Key words
AM fungi/species diversity/soil factors/Ammopiptanthus monglicus分类
农业科技引用本文复制引用
刘春卯,贺学礼,徐浩博,张淑容,牛凯..蒙古沙冬青AM真菌物种多样性研究[J].生态环境学报,2013,(7):1148-1152,5.基金项目
国家自然科学基金项目 （）
